EP0234427A2 - Balai de charbon à deux composants - Google Patents
Balai de charbon à deux composants Download PDFInfo
- Publication number
- EP0234427A2 EP0234427A2 EP87101981A EP87101981A EP0234427A2 EP 0234427 A2 EP0234427 A2 EP 0234427A2 EP 87101981 A EP87101981 A EP 87101981A EP 87101981 A EP87101981 A EP 87101981A EP 0234427 A2 EP0234427 A2 EP 0234427A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- carbon brush
- layer
- slots
- metal
- layers
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R39/00—Rotary current collectors, distributors or interrupters
- H01R39/02—Details for dynamo electric machines
- H01R39/18—Contacts for co-operation with commutator or slip-ring, e.g. contact brush
- H01R39/24—Laminated contacts; Wire contacts, e.g. metallic brush, carbon fibres
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R39/00—Rotary current collectors, distributors or interrupters
- H01R39/02—Details for dynamo electric machines
- H01R39/18—Contacts for co-operation with commutator or slip-ring, e.g. contact brush
- H01R39/20—Contacts for co-operation with commutator or slip-ring, e.g. contact brush characterised by the material thereof
Definitions
- the invention relates to a two-component carbon brush, which consists of at least two layers with different metal content, ie. H. a low-metal or metal-free layer and a metal-rich layer.
- Such a carbon brush is exposed to high temperatures during manufacture and operation. Because of the different metal content, their layers also have different thermal conductivity and in particular different thermal expansion coefficients. As a result, strong thermal stresses can occur in the layers, which can lead to the formation of cracks and, in extreme cases, to the layers flaking off one another.
- the object of the invention is to provide a two-component carbon brush that is less susceptible to damage from thermal stresses.
- slots in one of the layers By making slots in one of the layers, the latter is divided into individual fields which are movable relative to one another and can therefore follow the thermal expansions of the other layer without large different thermal stresses occurring.
- the slots are preferably provided in the layer with less metal and therefore also less conductive, so that the greater conductivity of the metal-rich layer is impaired as little as possible.
- the thermal stresses in the layer can already be reduced by means of slots which do not extend over the full thickness of the layer.
- the depth of the slots is preferably at least as great as the layer thickness of the relevant layer and preferably a little larger, so that the fields are completely separated from one another by the slots.
- the carbon brush shown in Fig. 1 has a low-metal or metal-free layer 2 and a metal-rich layer 3, in which connection cables 5 open. With its concave contact surface 6, the carbon brush can rest on the commutator or slip ring of an electric motor.
- Slits 4 are formed in the low-metal layer 2, which in the present case extend obliquely to the side edges of the carbon brush 3, extend over the entire extent of the layer 2 and divide it into individual fields 2a. As shown, the depth of the slots is somewhat greater than the layer thickness of layer 2.
- the width of the slots is advantageously approximately 1 mm, and their depth is advantageously approximately 1 mm greater than the layer thickness of layer 2.
- the slots run vertically over the height or horizontally over the width of the layer 2.
- two intersecting groups of obliquely extending slots 4 are provided.
- FIG. 5 corresponds to that according to FIG. 2 1 with the exception that the supply cables 5 open into the layer divided by slots.
Landscapes
- Motor Or Generator Current Collectors (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT87101981T ATE52878T1 (de) | 1986-02-28 | 1987-02-12 | Zweikomponenten-kohlebuerste. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE8605561U DE8605561U1 (de) | 1986-02-28 | 1986-02-28 | Zweikomponenten-Kohlebürste |
DE8605561U | 1986-02-28 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0234427A2 true EP0234427A2 (fr) | 1987-09-02 |
EP0234427A3 EP0234427A3 (en) | 1988-10-19 |
EP0234427B1 EP0234427B1 (fr) | 1990-05-16 |
Family
ID=6792238
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP87101981A Expired - Lifetime EP0234427B1 (fr) | 1986-02-28 | 1987-02-12 | Balai de charbon à deux composants |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0234427B1 (fr) |
AT (1) | ATE52878T1 (fr) |
DE (2) | DE8605561U1 (fr) |
ES (1) | ES2015895B3 (fr) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2200500B (en) * | 1986-12-27 | 1991-03-27 | Carbone Ag | A carbon brush for the armature of an electrical machine |
GB2273822A (en) * | 1992-12-22 | 1994-06-29 | Johnson Electric Sa | Brush spring arrangement for electric motor |
EP1133028A2 (fr) * | 2000-02-25 | 2001-09-12 | Sgl Carbon Ag | Dispositif bague collectrice pour moteurs électriques et générateurs |
FR2868614A1 (fr) * | 2004-03-31 | 2005-10-07 | Valeo Equip Electr Moteur | Balais pour une machine electrique |
CN105896224A (zh) * | 2015-01-22 | 2016-08-24 | 贵州航空发动机研究所 | 一种引电器的高速刷环冷却装置 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5414319A (en) * | 1994-03-02 | 1995-05-09 | Lucas Aerospace Power Equipment Corporation | Dynamoelectric machine with brush having slanted core |
DE10046048A1 (de) * | 2000-09-18 | 2002-04-04 | Bosch Gmbh Robert | Anordnung und Verfahren zum Schalten eines Starterstroms |
DE10344717A1 (de) * | 2003-07-17 | 2005-02-24 | KÄSDORF, Wolfgang | Stromübertragungsverbindung an eine Kohlebürste für einen Elektromotor |
CN114696174B (zh) * | 2020-12-31 | 2023-04-28 | 北京金风科创风电设备有限公司 | 滑环装置、偏航***及风力发电机组 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1199230A (fr) * | 1956-07-09 | 1959-12-11 | Morgan Crucible Co | Perfectionnement aux balais de contact électrique |
GB1522503A (en) * | 1975-10-14 | 1978-08-23 | Morganite Elect Carbon | Brushes for electric machines |
-
1986
- 1986-02-28 DE DE8605561U patent/DE8605561U1/de not_active Expired
-
1987
- 1987-02-12 AT AT87101981T patent/ATE52878T1/de active
- 1987-02-12 EP EP87101981A patent/EP0234427B1/fr not_active Expired - Lifetime
- 1987-02-12 ES ES87101981T patent/ES2015895B3/es not_active Expired - Lifetime
- 1987-02-12 DE DE8787101981T patent/DE3762787D1/de not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1199230A (fr) * | 1956-07-09 | 1959-12-11 | Morgan Crucible Co | Perfectionnement aux balais de contact électrique |
GB1522503A (en) * | 1975-10-14 | 1978-08-23 | Morganite Elect Carbon | Brushes for electric machines |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2200500B (en) * | 1986-12-27 | 1991-03-27 | Carbone Ag | A carbon brush for the armature of an electrical machine |
GB2273822A (en) * | 1992-12-22 | 1994-06-29 | Johnson Electric Sa | Brush spring arrangement for electric motor |
US5402027A (en) * | 1992-12-22 | 1995-03-28 | Johnson Electric S.A. | Brush assembly for an electric motor |
EP1133028A2 (fr) * | 2000-02-25 | 2001-09-12 | Sgl Carbon Ag | Dispositif bague collectrice pour moteurs électriques et générateurs |
EP1133028A3 (fr) * | 2000-02-25 | 2003-01-29 | Sgl Carbon Ag | Dispositif bague collectrice pour moteurs électriques et générateurs |
FR2868614A1 (fr) * | 2004-03-31 | 2005-10-07 | Valeo Equip Electr Moteur | Balais pour une machine electrique |
CN105896224A (zh) * | 2015-01-22 | 2016-08-24 | 贵州航空发动机研究所 | 一种引电器的高速刷环冷却装置 |
Also Published As
Publication number | Publication date |
---|---|
DE3762787D1 (de) | 1990-06-21 |
ATE52878T1 (de) | 1990-06-15 |
EP0234427B1 (fr) | 1990-05-16 |
DE8605561U1 (de) | 1986-05-15 |
ES2015895B3 (es) | 1990-09-16 |
EP0234427A3 (en) | 1988-10-19 |
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